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    • 6. 发明申请
    • WIRELESS TRANSMITTER AND PRECODING METHOD
    • 无线发射机和预测方法
    • US20110286502A1
    • 2011-11-24
    • US13063420
    • 2009-09-11
    • Fumiyuki AdachiKazuki TakedaShinsuke TakaokaKenichi MiyoshiMegumi Ichikawa
    • Fumiyuki AdachiKazuki TakedaShinsuke TakaokaKenichi MiyoshiMegumi Ichikawa
    • H04L27/01H04B1/38
    • H04L25/497H04J11/0033H04L25/0242H04L25/03159H04L25/03343
    • Disclosed is a wireless transmitter that can prevent deterioration of the error rate characteristic without reducing the data rate during mobile communications also utilizing THP for FDE. In the device, an equivalent channel matrix computation unit (118) computes weights to be used for FDE of a transmission block and an equivalent channel matrix indicating equivalent channels that are generated from channel impulse responses, and a decomposition unit (119) obtains a lower triangular matrix (L), that consists of a diagonal element that includes a high channel quality at the front of the transmitting block and a low channel quality at the rear, so as to indicate the channel quality of the transmission block, and an element indicating interference with the transmission block, and a unitary matrix (Q) by means of LQ decomposition of the equivalent channel matrix. A computation unit (120) uses the lower triangular matrix (L) and the average channel quality to compute a matrix (B) that minimizes the mean square error of all symbols between the transmission block before precoding and a block received by a wireless receiver. A preceding unit (103) performs THP of the transmission block using the matrix (B).
    • 公开了一种无线发射机,可以防止误码率特性的恶化,而不会降低移动通信期间的数据速率,同时也利用THP进行FDE。 在装置中,等效信道矩阵计算单元(118)计算要用于传输块的FDE的权重和指示从信道脉冲响应产生的等效信道的等效信道矩阵,并且分解单元(119)获得较低的 三角矩阵(L),其包括在发送块的前面包括高信道质量的对角元素和在后面的低信道质量,以指示传输块的信道质量,以及指示 与传输块的干扰,以及通过等效信道矩阵的LQ分解的酉矩阵(Q)。 计算单元(120)使用下三角矩阵(L)和平均信道质量来计算使预编码之前的传输块和无线接收器接收的块之间的所有符号的均方误差最小化的矩阵(B)。 前一单元(103)使用矩阵(B)执行传输块的THP。